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  1. daanvdl

    Macintosh Color Classic Internal Speaker Not Working

    The TDA is on the analog board. You have to start somewhere troubleshooting, and this is a easy to access spot which can be measured live. The TDA is the amplifier between the audiochip on the logicboard and the speaker. If there is no audio signal reaching the TDA suspect the logicboard, and...
  2. daanvdl

    Macintosh Color Classic Internal Speaker Not Working

    I would start by measuring with a scope on pin 2 of the TDA7052 for audiowaves, and check VCC to the TDA on pin 1. Double check continuity for ground pin 8.
  3. daanvdl

    Photo Request : 5500, 6500 and TAM Logic Board

    Nice :cool:
  4. daanvdl

    Photo Request : 5500, 6500 and TAM Logic Board

    Anyone tried to place/remove 51ohm R207 on the SRS_PRSNT line to proof it?:)
  5. daanvdl

    Yes, that was exactly the goal; only the CC housing and a logicboard, and all the rest is new🌞...

    Yes, that was exactly the goal; only the CC housing and a logicboard, and all the rest is new🌞 stil work in progress through;-)
    • daanvdl
    • Profile post comment
  6. daanvdl

    Macintosh Classic - EARLY revision Analogboard recreation (820-0395-A)

    Dear friends, I've been working on recreating the Macintosh Classic EARLY revision analog board for quite a while now. This board has been used across both the Classic I and Classic II models. This board can be reconfigured to both 110V as 240V, although i have not test 110V setup yet. After...
  7. daanvdl

    Playing with my LCD 'G3 Takky' Color Classic prototype. [ATTACH]

    Playing with my LCD 'G3 Takky' Color Classic prototype.
  8. daanvdl

    Mac PLus Q1/Q2 transistor replacements?

    Although i have enough NSDU01 / NSDU15 in private stock for my entire life, please let us know if the alternatives (MPS650 / MPS750) did work!
  9. daanvdl

    Please stop my collecting disease! [ATTACH]

    Please stop my collecting disease!
    • daanvdl
    • Profile post
  10. daanvdl

    Monitor out board 820-0541-B Replica

    Hereby also a VGA variant. https://github.com/daanvdl/630VGA
  11. daanvdl

    Releasing AirTalk: Wireless plug-and-play LocalTalk dongle

    No, LocalTalk relies on hardware features of the Zilog SCC serial controller in the mac. The iMac doesn't have that.
  12. daanvdl

    Monitor out board 820-0541-B Replica

    Well, I don't own a 5200, so I can't give you a 100% accurate answer, but: I think you can assume that the edge connector pinout is the same across the entire line (models 630/640/5200/5300/6200/6300/5400/6400/5500/6500). This means that the necessary lines are present. However: In the...
  13. daanvdl

    Monitor out board 820-0541-B Replica

    I actuall already have a VGA design, but there is more work involved then just the technical part. The bezel need to be redesigned, because the DB15 has a different shape and do not match up with the DB15 mounting holes. I am currently working on other projects, but will probably dive into it...
  14. daanvdl

    Monitor out board 820-0541-B Replica

    I needed the board for a private project, so i did recreate the monitor out board. This board supplies the standard Mac monitor port – DB-15 and the internal speaker connector. Performa 6200, 6205CD, 6214CD, 6216CD, 6218CD, 6220CD, 6230CD, 6290CD, 6300CD (Performa 6320 and 6360 carry a...
  15. daanvdl

    Macintosh Color Classic - trimmer values

    I have no purpose for this post other than to record it for reference. Trimmer resistor (PT10MH01) Value PL5 22K PF1 1K PL3 4K7 PL7 47K PL4 47K PL6 4K7 PF2 100K PV6 22K PV5 22K PV4 22K PV1 10K PV2 10K PV3 22K
  16. daanvdl

    Mac IIci Bourns Filter - Part specification

    This also may be helpfull for those who are fixing his/her IICI logicboard: Power button: L212132MV02Q C1: 10uF/16V (Tantalum - D size) C4: 1uF (2220 package) C7: 10uF/16V (Tantalum - D size) C18: 47uF/16V (Tantalum - D size) C19: 47uF/16V (Tantalum - D size) C20: 47uF/16V (Tantalum - D size)...
  17. daanvdl

    [A/UX] Drop-in clean A/UX install image for SCSI2SD

    Probably you already tried this, but if not; maybe worth trying.
  18. daanvdl

    Mac IIci Bourns Filter - Part specification

    Just for documentation: 115S0002 is equal to 4420P-601-250/201 112S0302 is equal to 4816P-1-102 and SOMC1603-102G
  19. daanvdl

    CRT on Mac Plus -- rows randomly offset by 1-2 pixels

    Are the shifitings related to floppydrive activity? Whining noises are usally BU406 or the flyback. Wiggles on display can be caused by a bad BU406. Try replacing BU406 and confirm ground is connected to the chassis.
  20. daanvdl

    Macintosh 128K/512K/Plus INTERNATIONAL analogboard recreation (820-0107-D)

    I did made some improvements. I will publish a new release tomorrow!
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